EP 0525338 A1 19930203 - A color-stable polycarbonate composition resistant to gamma-radiation.
Title (en)
A color-stable polycarbonate composition resistant to gamma-radiation.
Title (de)
Farbstabile, gegen Gammastrahlung beständige Polycarbonatzusammensetzung.
Title (fr)
Compositions de polycarbonate résistant aux rayons gamma.
Publication
Application
Priority
US 71806491 A 19910620
Abstract (en)
A thermoplastic polycarbonate molding composition which is rendered resistant to deterioration induced by exposure to gamma radiation is disclosed. The composition is imparted an improved degree of color stability upon the incorporation of a minor amount of a poly(alkylene oxide) oligomer and a halogenated aromatic acid derivative therewith. In addition, the composition is characterized by its low initial color and the small change in its yellowness index after a waiting period of several weeks.
IPC 1-7
IPC 8 full level
C08K 5/05 (2006.01); C08K 5/06 (2006.01); C08K 5/09 (2006.01); C08K 5/12 (2006.01); C08L 69/00 (2006.01)
CPC (source: EP US)
C08K 5/05 (2013.01 - EP US); C08K 5/06 (2013.01 - EP US); C08K 5/09 (2013.01 - EP US); C08K 5/12 (2013.01 - EP US); C08L 69/00 (2013.01 - EP US)
Citation (search report)
- [AD] EP 0228525 A1 19870715 - DOW CHEMICAL CO [US]
- [A] EP 0086353 A1 19830824 - BAYER AG [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0525338 A1 19930203; CA 2069595 A1 19921221; CA 2069595 C 20030819; US 5280050 A 19940118
DOCDB simple family (application)
EP 92109624 A 19920609; CA 2069595 A 19920526; US 88533692 A 19920519